[INFO] fetching crate flexgen 0.4.5...
[INFO] checking flexgen-0.4.5 against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] extracting crate flexgen 0.4.5 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate flexgen 0.4.5 on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flexgen 0.4.5
[INFO] finished tweaking crates.io crate flexgen 0.4.5
[INFO] tweaked toml for crates.io crate flexgen 0.4.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate flexgen 0.4.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettyplease v0.1.9
[INFO] [stderr]   Downloaded use-builder v0.1.0
[INFO] [stderr]   Downloaded quote-doctest v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6af59c5ebbe45a9c73662f00f0309da405aff7af992803f0430269b8b7d43a4f
[INFO] running `Command { std: "docker" "start" "-a" "6af59c5ebbe45a9c73662f00f0309da405aff7af992803f0430269b8b7d43a4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6af59c5ebbe45a9c73662f00f0309da405aff7af992803f0430269b8b7d43a4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6af59c5ebbe45a9c73662f00f0309da405aff7af992803f0430269b8b7d43a4f", kill_on_drop: false }`
[INFO] [stdout] 6af59c5ebbe45a9c73662f00f0309da405aff7af992803f0430269b8b7d43a4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9c1250b2233198327bfa6105d0092af0a9ce885e1fce5dc8559f2a9e5c7ccab
[INFO] running `Command { std: "docker" "start" "-a" "d9c1250b2233198327bfa6105d0092af0a9ce885e1fce5dc8559f2a9e5c7ccab", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling rayon-core v1.9.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling rayon v1.5.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking heck v0.4.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]     Checking prettyplease v0.1.9
[INFO] [stderr]     Checking use-builder v0.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking rust-format v0.3.4
[INFO] [stderr]     Checking quote-doctest v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking flexstr v0.9.2
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking flexgen v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.59s
[INFO] running `Command { std: "docker" "inspect" "d9c1250b2233198327bfa6105d0092af0a9ce885e1fce5dc8559f2a9e5c7ccab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c1250b2233198327bfa6105d0092af0a9ce885e1fce5dc8559f2a9e5c7ccab", kill_on_drop: false }`
[INFO] [stdout] d9c1250b2233198327bfa6105d0092af0a9ce885e1fce5dc8559f2a9e5c7ccab